fix(test): configuration changes and fixes needed to scale-test

[alexcastilio]

Description

Changes:

• move env var name OUTPUT_FILEPATH to common/common.go
• adjust timeout for diferent steps
• enable operator in retina legacy helm chart installation
• add retries to kube api requests to make it more robust to eventual failures in responses
• add podStatus to metrics exported
• add retina operator to get metrics from
• other small fixes and improvements

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• I have tested the changes locally.
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• I have updated the documentation, if necessary.
• I have added tests, if applicable.

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[github-actions]

This PR will be closed in 7 days due to inactivity.

[matmerr]

looks like linter has some feedback though